Short Critical Thinking Assignment Example | Topics and Well Written Essays - 500 words

Short Critical Thinking - Assignment Example There is also a growing concern for certain categories of visitors in social networking sites such as minors being exposed to inappropriate content or uploading certain photos which could compromise them. There more popular concern about social networks however are the inadvertent effects derived from an online post. The classic example for this is relationships that have gone sour due to inappropriate tagging in social networking site. Say for example a â€Å"boys night out† where pictures of it were uploaded in the social networking site where the wife/girlfriend can see. It may have been uploaded for fun but the consequence of it can spell disaster for relationships. 2. The founder of Wikipedia has a noble mission – to share all the world’s information with everyone everywhere, anytime. In what ways has this mission been successful? In what ways has it not been successful?   Wikipedia has been successful in its mission in sharing all the world’s information as it has become one of leading source of information about just anything. Research became easier because Wikipedia is very accessible and able to provide quick information about almost anything at language that is easily understandable. Wikipedia is also a victim of its own success however. Privilege information such as security information about the state and information about diplomatic assessments were leaked into the public which compromises the security of a country and relationship between nations. Email is dead for teenagers. Given the alternatives for email which are networking sites, chatrooms and text messages, teenagers find email to be boring and slow. Teenagers these days are used to quick information and communication which email lags behind compared to its counterparts in digital communication. In addition, email does not provide entertainment and variety which is critical among

Witchcraft And Demonology In Early Modern Europe

Witchcraft And Demonology In Early Modern Europe The witch-hunts were one of the most important events in the history of early modern Europe, taking place from the mid-15th century and ending in the mid-18th century. The view of witchcraft evolved throughout the period, with the Canon Episcopi calling the belief in witches a heresy, to Pope Innocent VIII issuing a bull in 1484 to denounce the practice of witchcraft as a heresy – all in a span of about 500 years. On the topic of witchcraft, it is unavoidable that the issue of gender would be discussed. The central question of this report would be how historians account for the persecution of more women than men in the witch-hunts in early modern Europe. The report will first outline the stereotype of a witch and discuss how this stereotype was promulgated. It will be concerned with two possible explanations that attempt to account for the persecution of more women than men – firstly, how the persecutions may be a results of a misogynistic and patriarchal culture, and s econdly, how the hunts may be been a result of the lack of tolerance for social deviance of women. The stereotype of a witch A collection of statistics indicate that a majority of accused witches were women, with most estimates pointing to about 80% of all victims being women (Ross, 1995: 334). Levack (1987: 142) provides a list of statistics indicating that in most regions in Europe, about three-quarters of the accused were women, with the figures being 90% in regions in Poland and England. Very evidently, the predominant notion of a witch is that it is foremost a woman. In discussing the stereotype of a witch it is difficult not to make reference to the cumulative concept of witchcraft (Levack, 1987: 32-51), which points to certain factors that would help in the identification of a witch. These include a witch’s association with the Devil, the pact with the Devil, the Sabbath, nightflying and metamorphosis. Reginald Scot in 1584 described witches as women who were â€Å"commonly old, lame, blearie-eied, pale, fowle, and full of wrinkles, poore, sullen, and superstitious†. This stereotype was promulgated by both genders. Women in early modern Europe were viewed as the weaker gender that was dependent on men in many ways, including for livelihood (Larner, 1984:86). Since the society was heavily patriarchal, women who did not fit in to the mould of a normal woman threatened the idea of females behaving in a particular manner. These women were nonconformists, and therefore put the livelihoods of other women at risk. Hence, they were ostrac ised by normal women. In behaving in a manner that was different, these women also threatened male domination and therefore had to be condemned by men. Both genders fed the idea that a woman who looked and behaved in a certain manner was a witch, hence allowing the stereotype to persist and spread. In addition, the stereotype of a domestic witch could have been said to be reinforced by a vicious cycle. This is evident in some cases, such as in that of Anna Schwayhofer, who confessed to stealing the Consecrated Host but still bothered to sweep up the crumbs after she had done so (Barry, Hester and Roberts, 1996: 230). The association of witches and broomsticks or distaffs used for spinning also fed the stereotype. Women were mostly restricted to the confines of their allotted spaces, and those practicing harmful magic would most likely be found in those spaces (Blà ©court, 2000: 303). Hence, it was not surprising that witchcraft was associated with the women and their domestic activities. Gendered witchcraft and misogyny The elite perception of women pointed to how they tended to be intellectually weaker than men, yet have more insatiable sexual appetites and a higher tendency to pursue the occult, a view propounded by 16th-century friar Martin de Castaà ±ega and in the Malleus itself by Kramer and Sprenger. Hence, historical literature tended to point towards how women were the more inferior of the two genders and therefore had the larger propensity to be driven towards becoming a witch. Without a doubt, the society in Europe at that point of time was one that was highly patriarchal in nature (Hufton, 1983, 125-141). While the society was essentially patriarchal in nature, there are arguments as to whether this can be extended to be characterised as being misogynistic. Anderson and Gordon (1978) point to the innate inferiority that women possessed in the eyes of the Roman Catholic Church, the dominant religious authority in that time, saying that the Church saw women as more â€Å"amenable to the allures of Satan† (Anderson and Gordon, 1978: 174). The paper also highlights the role of the Malleus Maleficarum (1486), that was anti-feminist and very popular, reprinting fourteen editions. The Malleus essentially highlights women as creatures possessing insatiable lust, yet not having the strength of mind to counter the temptations of the Devil. However, statistics also show that women were not the only ones who were victims of the witch-hunts. In several regions, men were the ones who were heavily persecuted instead. Regions such as Finland show a relatively even number of male and female persecutions, while in areas such as Normandy and Iceland, the number of accused male witches far exceeded the number of female ones. This clearly shows that if there had been a culture of misogyny, it was not uniformed throughout Europe. Monter (1964: 563) points out that the stereotypical witch in the French province of Normandy was not a poor, old woman, but a shepherd who may be a youth or an old man. Similarly, in Iceland, only 8% of all the accused witches were women (Levack, 1987: 142). The analysis and discussion of these statistics seem to point to the fact that there were differences in societal perspectives towards women and the differences in questioning techniques (Monter, 1964: 588). Monter (1964: 589) suggests that women wer e treated with leniency during the trial, and some were kept in prison alive for interrogation, even while the men were being executed. The reasons behind why men were more persecuted in some societies and women in others are unclear, but most historians point to the fact that it was impossible to pinpoint a particular reason in every society why this was so. Much of the reasons behind the gender imbalances must be attributed to the culture and views of the society itself, but what can be certain is that the witch-hunt was not strictly gender-specific. Without a doubt, a society that places emphasis on patriarchal values cannot be dismissed as misogynistic simply based on statistics alone. At this point it is relevant to note that there were differences between the elite and peasant conceptions of witchcraft, and this extended to the persecution of women. For the peasantry, the persecution of witches was less of the pact with the Devil and more of practical concerns such as the failure of crops or the death of livestock (Laurence, 1995: 216-218). Similarly, with the persecution of women, the concerns circled around the fact that babies and young children were being â€Å"victims† of maleficia, rather than the witch being a Devil-worshipper per se. Unsurprisingly, therefore, a large number of women who were accused of being witches were the lying-in maids for more privileged families, who looked after the newborns and had direct contact with them, as in the case of Anna Ebeler of Augsburg (Roper, 1991: 19). Roper (1991: 23) also points to how this may be a result of the association of femineity and maternity. Normal women were able to have children, yet witches w ere unable to, leading to a sense of envy that bred the feeling of hatred towards mothers and their babies. Strands of deviance One of the central themes occurring in the witch-hunts would have to be the fact that the society in early modern Europe had very little tolerance for those who were different from them. Jews and homosexuals were persecuted, and the society was predominantly peasant, poor and part of the Roman Catholic Church. Those who were different were frowned upon. Women generally married and had children at a young age, were uneducated and viewed as weak. Their primary purpose was to be subservient to their husbands and serve their families, keeping the household. This view of women can be contrasted to the stereotype of a witch, as mentioned above. Being old and unmarried, as well as being socially isolated, these alleged witches were evidently different from the general conception of a woman in society. Larner (1981:92) puts forward the idea that witches were persecuted not because they were women, but because they were â€Å"non-women† who did not fit into the societal view of a woman. While a typical woman was maternal, witches were unable to have children; where typical women stayed home at nights, witches flew to remote locations to join Sabbaths. This fit in with the elite conceptions that the reality in which witches lived in was essentially one that was an anti-society. Blà ©court (2000: 300) explains that God was a â€Å"guardian of social norms†, while the Devil was just the very opposite. These â€Å"non-women† were persecuted for disobeying the social norms, and some historians even argue that women accused other women of being witches because they felt threatened by an individual who did not conform to the male image of them (Larner, 1981: 102). The role of the Roman Church was also not to be ignored in the reinforcement of this stereotype. Women ha d an increased likelihood to practice love magic as compared to men (Blà ©court, 2000: 303), and since only priests of the Church could legally practice magic, they were more likely to be persecuted as a result. Remote possibilities While the possible presence of a repressive patriarchy or a societal aversion to deviant behaviour have often been cited as the reasons behind the gender imbalance during the witch-hunts, there are a few other remote possibilities that will be mentioned in the passing. Scully (1995: 857-858) points to how Venetian witches could choose witchcraft as a career option as opposed to being married or forced into prostitution, and this could be an escape from a possibly malevolent life, thereby proving to be a popular alternative for women in the region at that time. In his paper, Goodare (1991: 291-292) argues that economic factors could have been one of the reasons for the witch-hunts. Since the people had fallen upon hard times, those dependent upon charity handouts were hostile to others who were their competition – and these were mainly women. Another article by Ross (Ross, 1995: 333-337) draws an interesting correlation between the outbreak of syphilis in the 16th century and t he persecution of more women than men. He posits that women, being the symbols of fertility, could be shunned due to syphilis as they would be spreading the venereal disease. Further, much of the witch’s behaviour, he says, could be attributed to the madness that is a symptom of the disease. While fascinating, these observations by historians seem to be unique suggestions that do not appear in the literature as main causes for the increased persecution of women. Conclusion To conclude, this report has outlined the stereotype of a witch and what perpetrated this stereotype throughout early modern Europe. It seems persuasive to argue that although there was a strong patriarchal society in those days, this culture did not amount to being misogynistic in nature. The stereotype of the witch that emerge during this period and that was adopted by most modern historians emphasise a few features of witches that generally seem to be a result of the lack of tolerance for social deviant behaviour, and simply reinforced time and again in a vicious cycle. The trend points to the fact that there are a variety of factors that resulted in more women being persecuted than men. Often, this phenomenon can only be attributed to the differences in the various societies in Europe, and the culture of the region or country. Ultimately, it can be concluded that a combination of factors led to more women being persecuted than men. References Anderson, Alan and Gordan, Raymond. 1978. ‘Witchcraft and the Status of Women The Case of England’. The British Journal of Sociology, Vol. 29, No. 2: 171-184. Barry, Jonathan, Hester, Marianne and Roberts, Gareth. 1999. Witchcraft in Early Modern Europe: Studies in Culture and Belief (Past and Present Publications). Melbourne: Cambridge University Press. de Blà ©court, Willem. 2000. ‘The Making of a Female Witch’. Gender and History, Vol. 12, No. 2: 125-141. Goodare, Julian. 1998. ‘Women and the Witch-Hunt in Scotland’. Social History, Vol. 23, No. 3: 288-308. Hufton, Olwen. 1983. ‘Women in History. Early Modern Europe’. Past Present, No. 101: 125-141. Larner Christina. 1981. Enemies of God: The Witch-Hunt in Scotland. London: Chatto Windus. Larner, Christina. 1984. Witchcraft and Religion: The Politics of Popular Belief. New York: Basil Blackwell. Laurence, Anne. 1995. Women in Engliand, 1500-1760, A Social History. London: Weidenfeld Nicolson Illustrated. Levack, Brian. 1987. The Witch-hunt in Early Modern Europe. Harlow: Pearson Education Limited. Monter, Williams. 1997. ‘Toads and Eucharists: The Male Witches of Normandy, 1564-1660’. French Historical Studies, Vol. 20, No. 4: 563-595. Ross, Eric B. 1995. ‘Syphilis, Misogyny, and Witchcraft in 16th-Century Europe’. Current Anthropology, Vol. 36, No. 2: 333-337. Sawyer, Ronald C. 1989. ‘Strangely Handled in All Her Lyms: Witchcraft and Healing in Jacobean England’. Journal of Social History, Vol. 22, No. 3: 461-485. Scully, Sally. 1995. ‘Marriage or a Career?: Witchcraft as an Alternative in Seventeenth-Century Venice’. Journal of Social History, Vol. 28, No. 4: 857-876. Primary sources: Darst, David H. 1979. ‘Witchcraft in Spain: the Testimony of Martin de Castaà ±ega’s Treatise on Superstition and Witchcraft (1529)’. Kramer, Heinrich and Sprenger James. 1484. Malleus Maleficarum. Accessed 6 October 2009. Available at http://www.malleusmaleficarum.org/. Scot, Reginald. 1584. The Discoverie of Witchcraft. Retrieved from Early English Books Online. The practice of harmful magic

Francisco I. Madero :: essays research papers

Franciso I. Madero The Rosary was born in the Property, Parras, Coahuila, in 1873. It belonged to a well-off family of agriculturists. It made studies of commerce in France and the United States. From 1904 it took part in political subjects of Coahuila. President of the Independent Democratic Party named, that was against the re-election of the governor, Miguel Cardinal red. He collaborated in the organ of that party: The Democrat, in whom he wrote political articles, spreading his ideas on the human rights, the vote and the freedom. In 1908 I publish the Presidential Succession of 1910, book in which put to recover the democracy under protection of the Constitution of 1857. In its work it defended the political freedom and it showed the necessity to form a great political party that participated in the presidential elections of 1910. It defined to the Constitution of the 1857 like the triumph of the liberal ideas: Both great parties that formed, once obtained our independence -liberal and the conservative-, then represented the aspirations and the interests of two great Mexican groups. first, of ideas outposts, he wanted to implant in our country the most modern principles, and the second he wished to conserve to where outside possible, the old traditions. This party, integrated mainly by the people of money, always preservative, and by the clergy possessor of immense wealth, looked for the shade of a government of its form, the protection to its numerous interests (...) in the Hill of ace Bells was buried for always old the Conservative Party ". With its initiative the National Party Antireeleccionista was created (1909), of which candidate to the presidency of the Republic went. As of that moment, it initiated an intense political campaign by all the country to spread the democratic principles. This party, directed by Emilio Và ¡zquez Go'mez, made a convention the 15 of April of 1910, in which the basic principles were proclaimed that they sustained to the organization: †¢ Nonre-election. †¢ Strict fulfillment of the Constitution of 1857. †¢ Freedom of the municipalities. †¢ Respect to the individual guarantees. The 6 of following June, Log was jailed under the accusation of "CONATO of rebellion and ultraje to the authorities". It was transferred San Luis Potosi, where he waited for the accomplishment of the elections, that favored it mainly, and where it received the news of the fraud committed by Diaz, who declared reelecto again. The 6 of October, Log fled, taking refuge in San Antonio, Texas.

Case Analysis of IKEA Invades America

IKEA is a private home products retailer, which deals internationally in flat pack furniture, accessories, and bathroom and kitchen items. IKEA is the company which is being regarded as the pioneer in flat-pack designed furniture; this firm is now the largest furniture manufacturer of the world, with 120,000 employees around the globe.The revenues of IKEA have been growing at a rapid pace in the past few years, in the fiscal year of 2008-2009 these amounts soared up to $28.8 billion USD; this indicates a growth of 7 percent in comparison of the last year. The reason behind this rapid growth of IKEA is that it has been focusing on providing the market with affordable home furnishing products (Grant, 2005,p.120) that it is why it has been a major success all across the world especially in Europe where middle class earners have become citizens of the IKEA world.Delivering value priced home furnishing products has been the intention of IKEA since its formation way back in 1943. IKEA has been on the verge of a major success in the American market as its stakes are rising in the US since every passing day; no doubt that the managers at IKEA have devised some ingenious strategies which have earned this multinational giant a strong position in the North-American market as well.The American market is majorly divided into two prime segments and the basis of this division is price. The low and the middle class customers tend to buy from different local outlets or marts (like Wal-Mart, Target etc) due to the expensive nature of the products offered by the stylish and the renowned brands. Whilst the upper class opts for the luxurious and classy outlets where the goods are overpriced, these sellers regard their products as â€Å"onetime buy†.If we analyze IKEA’s strategy on the other hand; it caters to the low and the middle classes primarily by providing them the right value of   their money, not only this the missing feature of style is also added by IKEA, and hence the Americans are getting influenced by the IKEA magic. The share of the premium priced sellers is not much in the American market (merely 14-15 percent), so the strategy of IKEA is gaining it the market share and thus it is being translated in the revenue account.

Poetry Buffalo Bill’s Defunct Essay

Buffalo Bill’s Defunct is a short poem; it tells a story and creates a picture of a hardworking cowboy named Bill. The poem is about a dead, handsome blue eyed cowboy. It is written in the narrative form and in the first person. The author personifies death and he is upset with death for taking away Bill the cowboy: â€Å"†¦ and what i want to know is how do you like your blueeyed boy Mister Death.† (Clugston, 2010) Theme The theme is about death; however the author did not take the usual path of a sad tone or mournful words. Bill’s memory is simply about what he does, how he looks coupled with the speed and dexterity with which he accomplishes his task. Language The language that the author uses creates the image of a healthy looking blue eyed man sitting atop a silver haired steed, and rounding up the horses in the corral. Buffalo Bill could break/tame five wild horses in a short time. The words one to five running into each other creates the effect of the speed at which Buffalo Bill executes the horse breaking/taming exercise; â€Å"onetwothreefourfive pigeonsjustlikethat.†(Clugston, 2010) Pigeon is the name for a particular breed of horses that are very wild, dangerous and hard to tame. The author respects Buffalo Bill’s ability to repeatedly accomplish the difficult task of taming pigeon horses with seeming ease and confidence. These horses have a reputation of killing cowboys and it is highly probable that they are Mister Death’s accomplices in Bill’s demise. Imagery Cummings used imagery to tell the story. Culture influenced my response to this piece of work in that I still watch cowboy movies and as a child I used to listen to old cowboy songs. By the time I got to line six; I was drawn into piece. â€Å"Buffalo Bill’s†¦ride a watersmooth-silver stallion.† (Clugston, 2010) Immediately I could visualize the ranch setting, the noise of the horse, cowboy lasso making circles in the air over his head. (Up to that point I thought that Bill was an old man who had stopped working on the ranch). He continued to build on the image by mentioning that Bill is a blue eyed boy. I also pictured that Bill had light brown or blonde hair, was a white well-built man. The author skillfully chose and condensed his words to create this light and easy to read piece about death. Personification Cummings personifies death but does so with respect when he refers to it as â€Å"Mr. Death.† Death itself is an abstract noun but he had to get at someone for taking Buffalo Bill. As a result, Cummings could take a parting low jab at death: â€Å"How do you like your blueeyed boy Mister Death.† (Clugston, 2010) Tone The poem carries a sad and angry tone. The narrator is sad that Buffalo Bill is dead and he is also angry at â€Å"Mr. Death† for taking him away. Symbolism Cummings uses descriptive words such as: â€Å"Watersmooth† and â€Å"Blueeyed† both as symbolizing Buffalo Bills presence on the ranch. Water symbolizes life and regeneration and blue symbolizes peace. (Clugston, 2010) Conclusion Buffalo Bill’s Defunct is a short poem; it tells a story and creates a picture of a hardworking cowboy named Bill. Cummings personifies death but does so with respect when he refers to it as â€Å"Mr. Death.† The narrator is sad that Buffalo Bill is dead and he is also angry at â€Å"Mr. Death† for taking him away. Bill’s memory is simply about what he does, how he looks coupled with the speed and dexterity with which he accomplishes his tasks. The appearance of the piece is interesting and unusual. It does not conform to the poetic norms; however it is entertaining and it flows straight to the point. I connected with it because of the simple style that Cummings used to tell Buffalo Bill’s story. Reference Clugston, W. R., (2010). Journey Into Literature, San Diego, CA: Bridgepoint Education Inc.

compulsory voting essays

compulsory voting essays Compulsory voting (CV) is a system of laws and/or norms mandating that enfranchised citizens turn out to vote, often accompanied by (a) a system of compulsory voter registration and (b) penalties for non-compliance, usually fines or the denial of state-provided benefits. Cross-national studies find CV to be an effective mechanism for increasing turnout, by between seven to sixteen percentage points; within-country comparisons also generally find that CV boosts turnout. CV is commonly thought to advantage parties of the left (based on social-structural and demographic patterns of turnout in countries without CV), and hence shift public policy in that direction also. But these conjectures are difficult to verify, since other political and institutional variables intervene between voter turnout, election outcomes and policy outputs. It is often overlooked that fines and sanctions are just one aspect of CV: states employing CV usually reciprocate by reducing the costs of turnout for its citizens, via weekend voting, simple registration procedures, and the creation of a centralized, professional bureaucracy concerned with all aspects of election administration. ____________________________________________________ Assistant Professor and Victoria Schuck Faculty Scholar, Department of Political Science, Over twenty countries around the world have some form of compulsory voting, which requires citizens to register to vote and to go to their polling place or vote on the election day. With secret ballots it is not really possible to prove who has or has not voted so this process could be more accurately called compulsory turnout. One of the most well known compulsory voting systems is in Australia. All Australian citizens over 18 (except those of unsound mind or those convicted of serious crimes) must be registered to vote and show up at the poll on Election Day. Australians who do not vote are subject to fines although those w...

The Significance of Jordan in essays

The Significance of Jordan in essays In the book, The Great Gatsby, Jordon is a minor character but plays a significant role for Gatsby by using her to get reacquainted with Daisy. Daisy, a materialistic woman, and Gatsby were in love with each other as youths but became separated from her while he served in WWI. While he was gone, she married Tom Buchanan because of his wealth, something that Gatsby did not have at the time. In the first three chapters, we meet Jordon Baker who is a professional golf player and a best friend to Daisy Buchanan. Jordon attends a dinner at the Buchanans where she meets Nick Carraway who is a cousin to Daisy and who is also neighbors with Gatsby. During this party, they visit and learn of their common bond with Gatsby. Later that summer, Gatsby, who realizes the relationship between Jordon and Nick to Daisy, invites them to a party at his home in hopes of getting to know Nick and to devise a plan to meet Daisy. In chapter five, Gatsby asks Jordon to persuade Nick to invite Daisy to a tea party at his home. Nick agrees and calls Daisy the next day to invite her and states Dont bring Tom (Fitzgerald, 88). Daisy, not knowing that Gatsby would be there, sees his face and is embarrassed. Gatsby is embarrassed as well, but as the party progresses they become more comfortable being together again. Jordons primary purpose as a character in this book is concentrated mostly during the first few chapters. Although a minor character, she is the primary source for Gatsby to meet Nick, who in turn, brings him together with Daisy again. ...

UC Essay Examples for the Personal Insight questions

UC Essay Examples for the Personal Insight questions Every applicant to one of the University of California campuses must write four short essays in response to the UC applications Personal Insight questions. The UC essay examples below reveal how two different students approached the prompts. Both essays are accompanied by an analysis of their strengths and weaknesses. As you figure out your strategy for responding to the UC Personal Insight questions, keep in mind that its not just the individual essays that matter, but also the full portrait of yourself that you create through the combination of all four essays. Ideally, each essay should present a different dimension of your personality, interests, and talents so that the admissions folks get to know you as a three-dimensional individual who has a lot to contribute to the campus community. UC Sample Essay, Question #2 For one of her Personal Insight essays, Angie responded to question #2: Every person has a creative side, and it can be expressed in many ways: problem solving, original and innovative thinking, and artistically, to name a few. Describe how you express your creative side. Here is her essay: I’m not great at drawing. Even after taking the required art classes in elementary and middle school, I don’t really see myself becoming a famous artist anytime soon. I’m most comfortable creating stick figures and notebook doodles. However, my lack of innate talent hasn’t kept me from using drawing communicate or entertain through cartoons. Now, like I said, the artwork itself isn’t going to win any awards, but that’s only part of my creative process. I draw cartoons to make my friends laugh, to make my siblings feel better if they’re having a bad day, to poke fun at myself. I don’t make cartoons to show off my artistic ability; I make them because I think they’re fun to create, and (so far) other people enjoy them. When I was about seven or eight, my sister got dumped by her boyfriend unexpectedly. She was feeling really down about it, and I was trying to think of something I could do that would cheer her up. So I drew a (pretty bad) likeness of her ex, made better by some rather unflattering details. It made my sister laugh, and I like to think I helped her through her break-up, even if only a little bit. Since then, I’ve drawn caricatures of my teachers, friends, and celebrities, ventured a little into political cartooning, and started a series about my interactions with my idiotic cat, Gingerale. Cartooning is a way for me to be creative and express myself. Not only am I being artistic (and I use that term loosely), but I’m using my imagination to create scenarios and figure out how how to represent people and things. I’ve learned what people find funny, and what is not funny. I’ve come to realize that my drawing skills are not the important part of my cartooning. What is important is that I’m expressing myself, making others happy, and doing something small and silly, but also worthwhile. Discussion of UC Sample Essay by Angie Angies essay comes in at 322 words, a little below the 350-word limit. 350 words is already a small space in which to tell a meaningful story, so dont be afraid to submit an essay thats close to the word limit (as long as your essay isnt wordy, repetitive, or lacking substance). The essay does a good job showing the reader a dimension of Angie that probably isnt apparent anywhere else in her application. Her love of creating cartoons wouldnt appear in her academic record or list of extracurricular activities. Thus, its a good choice for one of her Personal Insight essays (after all, its providing new insight into her person). We learn that Angie isnt just a good student who is involved in some school activities. She also has a hobby she is passionate about. Crucially, Angie explains why cartooning is important to her. The tone of Angies essay is also a plus. She has not written a typical look how great I am essay. Instead, Angie clearly tells us that her artistic skills are rather weak. Her honesty is refreshing, and at the same time, the essay does convey much to admire about Angie: she is funny, self-deprecating, and caring. This latter point, in fact, is the true strength of the essay. By explaining that she enjoys this hobby because of the happiness it brings other people, Angie comes across as someone who is genuine, considerate, and kind. Overall, the essay is quite strong. It is clearly written, uses an engaging style, and is free of any major grammatical errors. It presents a dimension of Angies character that should appeal to the admissions staff who read her essay. If there is one weakness, it would be that the third paragraph focuses on Angies early childhood. Colleges are much more interested in what you have done in recent years than your activities as a child. That said, the childhood information connects to Angies current interests in clear, relevant ways, so it does not detract too much from the overall essay. UC Sample Essay, Question #6 For one of his University of California Personal Insight essays, Terrance responded to option #6: Describe your favorite academic subject and explain how it has influenced you. Here is his essay: One of my strongest memories in elementary school is rehearsing for the annual â€Å"Learning on the Move† show. The fourth graders put on this show every year, each one focusing on something different. Our show was about food and making healthy choices. We could pick which group to be in: dancing, stage design, writing, or music. I chose music, not because I was interested in it the most, but because my best friend had picked it. I remember the music director showing us a long row of various percussion instruments, and asking us what we thought different foods would sound like. This was not my first experience in playing an instrument, but I was a novice when it came to creating music, deciding what the music meant, and what its intent and meaning was. Granted, choosing a gà ¼iro to represent scrambled eggs was not Beethoven writing his Ninth Symphony, but it was a start. In middle school, I joined the orchestra, taking up the cello. Freshmen year of high school, I auditioned for, and was accepted into, the regional youth symphony. More importantly, though, I took two semesters of Music Theory my sophomore year. I love playing music, but I’ve learned that I love writing it even more. Since my high school only offers Music Theory I and II, I attended a summer music camp with a program in theory and composition. I learned so much, and I’m looking forward to pursuing a major in Music Composition. I find writing music is a way for me to express emotions and tell stories that are beyond language. Music is such a unifying force; it’s a way to communicate across languages and borders. Music has been such a large part of my life- from fourth grade and on- and studying music and music composition is a way for me to create something beautiful and share it with others. Discussion of UC Sample Essay by Terrance Like Angies essay, Terrances essay comes in at a little over 300 words. This length is perfectly appropriate assuming all of the words add substance to the narrative. When it comes to the features of a good application essay, Terrance does well and avoids common pitfalls. For Terrance, the choice of question #6 makes sense- he fell in love with composing music, and he is entering college knowing what his major will be. If you are like many college applicants and have a wide range of interests and possible college majors, you may want to steer clear of this question. Terrances essay does a good job balancing humor with substance. The opening paragraph presents an entertaining vignette in which he chooses to study music based on nothing more than peer pressure. By paragraph three, we learn how that rather serendipitous introduction to music has led to something very meaningful. The final paragraph also establishes a pleasing tone with its emphasis on music as a unifying force and something that Terrance wants to share with others. He comes across as a passionate and generous person who will contribute to the campus community in a meaningful way. A Final Word on Personal Insight Essays Unlike the California State University system, the University of California schools have a holistic admissions process. The admissions officers are evaluating you as a whole person, not just as numerical data related to test scores and grades (although both are important). The Personal Insight questions are one of the primary ways the admissions officers get to know you, your personality, and your interests. Think of each essay as an independent entity, as well as one piece of a four-essay application. Each essay should present an engaging narrative that reveals an important aspect of your life as well as explain why the topic youve chosen is important to you. When you consider all four essays in combination, they should work together to reveal the true breadth and depth of your character and interests.

Graduation Speech Essay Example | Topics and Well Written Essays - 250 words - 1

Graduation Speech - Essay Example It has been fun attending most of the activities while some have been challenging. I, in particular, cannot forget how I have struggled with my science subjects. At first, they were hard to comprehend but all that is now behind me. High school life have taught me lessons that I will forever remain indebted. Being patient, hardworking, and putting God first in everything I do has seen me endure the long journey. I have severally found myself on the wrong path with teachers for poor performance and unfinished assignments. I acknowledge all actions you took and believe that all were meant to mold me to be a responsible person. To the students I leave behind, I urge you to work hard in your studies and you will also graduate in the years to come. Respect your teachers and do all they ask you. Remember your parents are sacrificing their resources to have you in school. Please do your best to avoid embarrassing them. I believe St. Gabriel High School students have the potential to succeed in everything. I indeed wish you

Effects of economic and political climates on current higher education Essay

Effects of economic and political climates on current higher education - Essay Example Various factors of politics, economy and regulatory developments do have an impact on institutions of higher learning. Most issues are above the control of the national higher education community and the individual institutions. In response to these changes, institution budgeters must respond accordingly to the anticipatory changes in political and economic conditions that may have an effect on the amount of revenue that is available. In addition, of equal importance, they must put into consideration the pressures that are being exerted by the external forces on the institution of higher learning before its survival is put in jeopardy. Economic climate Institutions dealing with higher education are stable partly due to the mission and role that they have in the society and the way they are operated their activities and management. Despite this, the current financial issues in various ways are affecting the institutions of higher learning (Solt 2008, pp.48–60). Economic changes have significantly affected the higher institutions of learning since the beginning of 1990’s. In respect to this, changes seen in the national government support for higher education have been accompanying the turmoil of the economy. Today, the institutions of higher learning are no longer enjoying the high ranking that they used to on the societal agendas, local, state and national talks. Resources that were previously directed to higher education are captured by other sectors of the government.

Policy recommendations in counter-terrorism Essay

Policy recommendations in counter-terrorism - Essay Example Second, all terrorists are treated as criminals (Global Focus 2010). Third, the United States can and does apply considerable political, economic, and military pressure on the states that are known to be supporting terrorism (Global Focus 2010). Based on these principles are the four rules on which U.S. counter-terrorism strategy currently builds. First, there should be no concessions or deals made with terrorists (Global Focus 2010). U.S. government will never make any concessions or deals with the foreign terrorists taking American hostages. Second, the U.S. will always seek to bring terrorists to justice for the crimes they have committed (Global Focus 2010). No matter how long it takes, America will track down, catch, and convict all terrorists who have ever attacked the American state, an American citizen, or their interests (Global Focus 2010). Third, the United States works hard to force the states that sponsor terrorists to change their attitudes and behaviors (Global Focus 2 010). Fourth, the U.S. believes that it can bolster its allies to work individually or cooperatively against terrorists (Global Focus 2010). Needless to say, the current counter-terrorism strategy demands huge financial and intellectual investments. Simultaneously, while President Obama claims his counter-terrorism strategy to rely on cooperation, collaboration, and resilience, the scope of violence and military efforts applied against domestic and international terrorism cannot be ignored (Obama 2011). These are not the only problems facing the United States in its fight against terrorism. To begin with, most, if not all, counter-terrorism efforts developed in the U.S. rely on an implicit assumption that global terrorist organizations have narrow support and can be... U.S. government will never make any concessions or deals with the foreign terrorists taking American hostages. Second, the U.S. will always seek to bring terrorists to justice for the crimes they have committed (Global Focus 2010). No matter how long it takes, America will track down, catch, and convict all terrorists who have ever attacked the American state, an American citizen, or their interests (Global Focus 2010). Third, the United States works hard to force the states that sponsor terrorists to change their attitudes and behaviors (Global Focus 2010). Fourth, the U.S. believes that it can bolster its allies to work individually or cooperatively against terrorists (Global Focus 2010). Needless to say, the current counter-terrorism strategy demands huge financial and intellectual investments. Simultaneously, while President Obama claims his counter-terrorism strategy to rely on cooperation, collaboration, and resilience, the scope of violence and military efforts applied against domestic and international terrorism cannot be ignored (Obama 2011). These are not the only problems facing the United States in its fight against terrorism.  To begin with, most, if not all, counter-terrorism efforts developed in the U.S. rely on an implicit assumption that global terrorist organizations have narrow support and can be easily eliminated (Lempert et al. 2008). In reality, terrorist organizations originating from the Islamic world have already gained broad support across a number of Islamic states.

Internet Banking Research Paper Example | Topics and Well Written Essays - 1000 words

Internet Banking - Research Paper Example As to the exposure to the internet is concerned almost all those who said they did have exposure to internet for over a year also said that they had internet banking exposure for over a year which is very welcome since most of the people who are on the internet seem to be more inclined towards using internet for this purpose. Most people (40%) felt that the internet banking enabled them to do their job quickly and only 20% felt that it does not help them do their job quickly. Others felt neither or did not comment. This indicates there is an overall speed increase in the process. This has also resulted in 40% of the people saying that their productivity has gone up and 45% said that their effectiveness in utilizing the services have gone up. The same is not the case with the utilization of banking services, which the respondents seem to feel is more towards disagreeing. 40% said the internet banking has NOT improved their services. Around 35% said they perceived an improvement in the service. Nearly 45% of the respondents also felt that it was not easy to use the internet banking facility. This implies that the sites are not really user friendly and the usability factor of the websites has to be analyzed. The overall banking usefulness as percei... The overall banking usefulness as perceived was checked and was found to be more in favor of yes as shown above. The number of people who perceived that the internet banking is not useful was just 15%. This implies that the overall reaction of the people is towards satisfactory internet banking. The above pie chart shows that there are also undecided people of almost 45% of the surveyed lot who could be turned positive with a little effort. Trust From the analysis of the survey results, it is found that the overall satisfaction levels in the case of trust is also in favor of the bank. However, some of the important questions in this regard, 'I feel trustworthy towards my bank' and 'Using internet banking is secure' has evoked a strong neutral stand from the respondents. This indicates that the majority of them are still in a dilemma as to use the internet banking or not to use it. This dilemma can easily be turned positive by suitable promotion and clarifications for the clients of the bank. Another interesting point to note is the fact that nearly 40% of the people have said they may not trust the bank with their private information. This possibly stems from the idea that the respondents might be getting from the bank that they are sharing their personal information with others merchants. But the overall trust in the bank has not diminished as per the figure below. There are more people who are saying they trust their bank without any holds. There is also 40% of people who say that they are neutral; not saying no but at the same time not saying yes either. This is a group that needs further analysis by the bank as to why this is happening and may be efforts to be taken to set this right. Perceived Ease

The Curse (1988) Research Paper Example | Topics and Well Written Essays - 500 words

The Curse (1988) - Research Paper Example Through his narration, the author has tried to make use of the words, actions as well as thoughts of Mitchell Hayes that would occur to the man as he went about living the due course of his lifestyle. His family and friends, as well as the police try to tell him that he had done enough, however, he began questioning his own decisions and feels guilt and resentment at himself for not having been able to do ‘more’. Hayes says, â€Å"I should have stopped it. I think I could have stopped it.† (Dubus, Andre) The author has tried to express how every human being tries his best to always do more than what he can, and when he is not able to do so, he blames himself for it and regrets his decisions later. However, this is a futile exercise because every man has a choice to make and those choices affect his entire life and the course that it takes. No choices can be made later or gone back upon, and thus Hayes takes a long time to understand the very concept of not regrett ing whatever one does in their life. As the rape comes to an end and the bikers leave the scene, Hayes slowly walks towards the girl and sits down next to her.

Champion of the world by maya Angelou chapter 19 Essay

Champion of the world by maya Angelou chapter 19 - Essay Example Chapter 19 gives a full description of small southern town of Stamp residents who are present in Momma’s store. These people are fully engaged to the ongoing championship boxing in the radio. This fight is between Carnera, who is Caucasian and Joe Louis representing the African American. In the event of the fight, Louis almost loses the fight but at the end of the fight he manages to win the fight. The win for the world champion title triumphs both the fighter and the whole race. In this respect, there is an indication that people can be united by a common belief or desires in the major events like this one. The fully crouched bodies in the store listening attentively to the prize fight indicate the coincidental placing of individuals with a common goal (Angelou 133). The reason behind the occurrence of the story is to create hope. The strong hope is then shaken when Louis indicates a sign of losing. Despair is uttered by the abrupt switch of confidence and hope. The author also uses the story to induce a sense of desperation where he points the fear of retreating to slavery for the African American people in the case of Joe losing the fight (Angelou 135). Another factor contributing to the happening of the story is the induction of the mood of greatness after the depression point uplift. In the story, Angelou plans the story events to empower rejoice mood in contrast with the desperation mood. The whole chapter narrates a story in the target for the deliverance theme immediately after the change of scene from the cool air in the night (Dungy and Whitaker 76). The story unfolds at the store full of people keenly listening to the main fight for Joe Louis on the radio. Joe is fighting the white man hence wins majority of the supporters in the store due to the black identity. Joe’s victory determines many factors amongst the black race. In accordance to the African American, Louis win gives supporters a

The Curse (1988) Research Paper Example | Topics and Well Written Essays - 500 words

The Curse (1988) - Research Paper Example Through his narration, the author has tried to make use of the words, actions as well as thoughts of Mitchell Hayes that would occur to the man as he went about living the due course of his lifestyle. His family and friends, as well as the police try to tell him that he had done enough, however, he began questioning his own decisions and feels guilt and resentment at himself for not having been able to do ‘more’. Hayes says, â€Å"I should have stopped it. I think I could have stopped it.† (Dubus, Andre) The author has tried to express how every human being tries his best to always do more than what he can, and when he is not able to do so, he blames himself for it and regrets his decisions later. However, this is a futile exercise because every man has a choice to make and those choices affect his entire life and the course that it takes. No choices can be made later or gone back upon, and thus Hayes takes a long time to understand the very concept of not regrett ing whatever one does in their life. As the rape comes to an end and the bikers leave the scene, Hayes slowly walks towards the girl and sits down next to her.

Cruise Industry Essay Example | Topics and Well Written Essays - 3750 words

Cruise Industry - Essay Example This therefore, divides the market into different influential spheres. The fragmented industry allows all its players to create niches and the market shares where each one of them can work in, unlike in the consolidated industry where there little or no niches for the small players (Enz' 514). Q.2 In the cruise industry the cruising market is a single and segmented entity where products are differentiated mostly by the preferences of consumers and the assumption is that there is an increase in the overall sustainability and completion. Therefore, the cruise industry can be characterized as an oligopoly. The market structure of the Cruise industry is noticeable by the fact that there are few large firms such as the Carnival Corporation, which dominate this market, which all offer identical services that have a significant barrier when making entries in this industry. The cruising industry is widespread in the world and diverse in all ways. It dominates most of the modern landscape tod ay and the economics. Each of the firms in the cruising industry keep a close eye on what other firms in the industry are doing. Thus, a firm’s success in the cruising world is not entirely dependent as a sole entity. The cruising industry can also be classified under the oligopoly as the prices are mostly rigid and competition is not involved through the change in prices. Q.3 Carnival Corp brands are the most recognizable in United Kingdom, North America, among other states. The brands offer numerous customer base products which are highly based on customer cultures, languages and other preferences. Numerous brands that are operated by Carnival Corp usually have synergies (Enz' 516). A synergy is a merger of two or more firms and produces an effect. For example, if one of Carnival Corp’s brands has excellent services and products but has poor distribution channels, and the other brand has an excellent channel of distribution but offers poor services and products, the two could form a synergy and benefit from each other. The firm’s brands range from the carnival cruise lines, Cunard line, Princess Cruises and the Holland American Line. A combination of these brands forms a synergy that is usually more than the sum of the sum value of these brands. Forward-looking statements of Carnival’s annual costs savings can be identified through the estimates made on synergies and the cost of time that is taken to implement the synergies in the brands. Q. 4. Brand strategy: The existing customer information can influence the brand strategies at Carnival Corps in the future by increasing the firm’s profitability and stock price. Customer information promotes the use of effective brand strategies for up-coming organizations. More information influencing the brand strategies is a guarantee of the future ability of Carnival Corp to compete strongly in this competitive market. Additionally, there is a guarantee that the firm will not introduc e any defective products to its customers, thereby reducing the risk of making of future losses. Information from the customers predicts on the firm’s future performance and increases the chances of the firm identifying its faults. Information from regular customers who have cruised in the same routes may remind Carnival Corps that they have to provide new port destinations and products (Enz' 516). Q. 5.Carnival’s existing customer perceptions of its brands: Carnival

The No Load Circuit And Short Circuit Characteristics Biology Essay

The No Load Circuit And Short Circuit Characteristics Biology Essay The Ward-Leonard system is a conventional speed control method. It consists of a 3 phase induction machine controlling a separately excited DC generator. The DC generator in turn supplies a variable DC voltage to a DC motor. It is basically a DC variable speed drive [2]. The Ward-Leonard system is shown below in Figure 1. Figure : Ward-Leonard system setup The principle behind the Ward-Leonard system is that the DC generator can actually influence the motor to develop a torque and speed required by the load [3]. Thus the speed of the generator is directly proportional to the armature voltage applied to the DC motor [2]. The output voltage of the DC generator is controlled by adjusting the exciting voltage (field voltage), this then controls the speed of the DC motor [2]. Applications Travelling cranes Lifts Mine hoists Boring machines Table : Ward-Leonard system advantages and disadvantages Advantages Disadvantages Very wide range of speeds High cost Provides step less speed control Low over-all efficiency Experiment Apparatus 2- coupled induction machine and dc motor (as shown below in Figure 2) 4- digital multimeters (DMM) 2- Variac (Excitation field) Tachometer Figure : Coupled induction machine and dc machine Objectives of the experiment Characterise the DC machines and determine the equivalent circuits. Derive the power flow equations between the DC machines in terms of the equivalent circuits. Control the power flow between the DC machines by adjusting the field currents. Then compare the measured results with the expected theoretical power flow. Experiment procedure and setup No-load Test This test was used to determine the armature voltage. Before the experiment began the armature and field resistance were both measured. The Variac (exciter) was then connected to the field port on the DC machine. The Digital multimeter was connected to the armature port on the DC machine in order to measure the armature voltage. The DC machine was coupled to a three phase induction machine which was first turned on to run the DC machine. The setup is shown below in Figure 3. Using the knob on the Variac, increase the field voltage with an increment of 10V ( also increases) and for each case determine the armature voltage. This was done from 0V to the rated field voltage 110V. Now decrease the field voltage to demagnetise the DC machine from 110V to 0V also with an increment of 10V. Note the residual magnetism. Figure : No-Load test setup Short-Circuit Test This test was used to determine the armature current. The same procedure for the No-Load test was followed but in this case the digital multimeter was connected in series in the armature port in order to measure the current. Using the knob on the Variac, increase the field voltage with an increment of 10V and for each case determine the armature current. This was done from 0V to the rated field voltage 110V. The DC machine was demagnetised from 110V to 0V also with an increment of 10V recording the armature current. Ward Leonard experiment This setup was used to determine the power flow between the machines. The two coupled machines were connected together as shown below in Figure 4. A coupled machine is shown in Figure 1. The coupled machines were connected together through the armature. The positive terminals of the armature were connected together and the negative terminals were connected together. A digital multimeter was connected in between the positive terminals of the armature in order to measure the current. Each DC machine was connected to Variac through the field port. Both the Variac machines were turned down to 0V. The two induction machines were switched on both at the same time from the 3 power supply. The Variac knobs were both turned at the same time with an increment of 10V from 0V. This is done up until the multimeter reads 0A. The 0A was obtained at a field voltage of 110V. At this stage the second machine was left constant and the field voltage of the first machine was turned down at an increment of 10V, whilst recording the current and the speed of the machine without exceed the speed of 1502 rpm. A tachometer was used to measure the speed. After that the first machine was calibrated back to 110V, were the multimeter reads 0A. Now the first machine was left constant and the field voltage of the second machine was turned down at an increment of 10V, whilst recording the current and the speed of the machine without exceed the speed of 1502 rpm. A tachometer was used to measure the speed. After this then the practical is complete, the next step is to deduce an equation for the power as a function of excitation (field current) based on the machine characteristics. Then plot the graphs. Figure : Power flow setupC:UsersMashDesktopf.bmp Safety Do not exceed the ratings of the machines and all the other equipment. Switch off the equipment after completing the practical. Results Characterisation of DC machine Table : Armature and field resistance Resistance Before After 7.3 à ¢Ã¢â‚¬Å¾Ã‚ ¦ 9.8 à ¢Ã¢â‚¬Å¾Ã‚ ¦ 573 à ¢Ã¢â‚¬Å¾Ã‚ ¦ 542 à ¢Ã¢â‚¬Å¾Ã‚ ¦ No-load characteristics G:Machine Pracopennn.bmp Figure : No-load circuit Table : No-load test results Magnetizing Demagnetizing Field volts (V) Armature volts (V) Field volts (V) Armature volts (V) 0 0 1.6 9 10 27.8 10 35 20.8 61.1 20.5 68 30 88.9 30.1 97 40 116.8 38.2 119 50.1 141.1 50.1 148 60.6 165.1 60.1 170 70 181.9 69.5 185 80 196.2 80.4 200 90 209 90.5 211 100.2 218 100.9 220 110.3 227 110.3 227 Figure : No load test results plot The following table shows the calculated field current using the measured field resistance of 573 à ¢Ã¢â‚¬Å¾Ã‚ ¦. Table : Amperes in the field coils Magnetizing Demagnetizing Field volts (V) Field Amperes (A) Field volts (V) Field Amperes (A) 0 0.0000 1.6 0.0028 10 0.0175 10 0.0175 20.8 0.0363 20.5 0.0358 30 0.0524 30.1 0.0525 40 0.0698 38.2 0.0667 50.1 0.0874 50.1 0.0874 60.6 0.1058 60.1 0.1049 70 0.1222 69.5 0.1213 80 0.1396 80.4 0.1403 90 0.1571 90.5 0.1579 100.2 0.1749 100.9 0.1761 110.3 0.1925 110.3 0.1925 Figure : DC generator no-load characteristics Comments The graph shows the relationship between the no-load armature voltage and the field current at a constant speed of 1496 rpm. The magnetization curve is a straight line up to a field current of 0.1A, after this point the graph approaches a condition known as saturation, thus any increase in the field current does not result in an increase in the armature voltage. Consequently the demagnetizing plot is above the magnetizing plot, this is due to the residual magnetism and hence the curve begins just above the 0 mark (a little way up). Closed circuit test G:Machine Pracshortt.bmp Figure : Closed circuit diagram Table : Closed circuit results Magnetizing Demagnetizing Field volts (V) Armature current (A) Field volts (V) Armature current (A) 1.7 2.54 1.6 0.21 10.8 3.63 10.7 1.1 20.5 4.52 18.8 1.81 30.8 4.72 29.5 2.64 40 5.54 39.9 3.37 50.9 6.4 50.2 3.93 60.7 5.59 60.8 4.44 70 6.01 70.7 5.05 80 6.1 80.8 5.5 90 6.52 90 5.9 100 6.92 100 6.54 111 7.4 111 7.4 Figure : Short-circuit characteristics Nameplate Information No-load circuit calculations Figure : No-load Fitted-curve This can be written as Using Figure 10 we can use the fitted plot of the no-load saturation curve above to determine the constant. The measured speed is used. From Thus we can calculate: But in practice we can approximate the value of the torque constant Short-circuit calculations Figure : Short circuit fitted plot This can be written as As calculated above Thus by substitution Thus now we can determine the armature resistance Coupled machines (Ward-Leonard system) ) 110.1 110 0.1 1492 1491 0.205224 0.15597 110.1 100 0.15 1492 1492 0.186567 0.212687 110.1 90 0.49 1490 1494 0.16791 0.625299 110 79.9 0.86 1486 1499 0.149067 0.974303 110.1 70 1.22 1490 1498 0.130597 1.210896 110 60 1.59 1480 1499 0.11194 1.352687 110.1 50 2.03 1484 1501 0.093284 1.439179 110.1 40.3 2.45 1484 1503 0.075187 1.399974 Power flow ) 110 110 0.1 1492 1492 0.205224 0.15597 100 110 -0.83 1492 1496 0.186567 -1.17687 90 110 -1.17 1480 1500 0.16791 -1.49306 80 110 -1.56 1470 1500 0.149254 -1.76955 70 110 -2.05 1474 1500 0.130597 -2.0347 60.1 110 -2.25 1483 1502 0.112127 -1.91737 Derivation of power equation Figure : Ward-Leonard system setup Figure : Ward-Leonard system equivalent circuit Now from Figure above we expect that Where (For the generator) (For the motor) (For the generator) (For the motor) Equate equation (1) and (2) Rewrite the equation Now we observe that Let This equation remains the same, it just depends which machine is a generator and which machine is a motor. As mentioned above to determine which machine acts as a generator or motor, we look at the following sign conversion. Conclusion DC machine Characterisation The DC machine characterisation of the generator was successfully done, both the no-load test and the short circuit test were done and all the parameters were calculated. The parameter calculated include the armature resistance which was found to be 6.25 à ¢Ã¢â‚¬Å¾Ã‚ ¦ as compared to the measured and the rated armature resistance it is within range ( difference). The characterisation also helps us understand how the dc works; by using the saturation curves we can determine the point where the machine starts saturation and determine the critical resistance. We can also determine information about the machine which would normally be given in the nameplate. Ward-Leonard system and the power flow The power flow equation was successfully derived and found as the equation below The equation was derived from the Ward-Leonard system that was setup in the practical. The practical showed that the power can be controlled between two DC machines using this setup. In the practical the power flowed from the generator to the motor, this was seen through the current having a negative current flowing in one direction and a positive current flowing to the other direction. The practical was successful and it clearly corresponds to the theory. What I leaned The practical was useful in terms of helping us understand the concept of residual magnetism which is the same as in the theory. The practical was also a good representation in terms of how an elevator/lift works.

Protestant Propaganda Essay -- Ireland Propaganda Essays

Protestant Propaganda What do you think of when you hear the name Ireland? Ireland is a relatively small island off the coast of Great Britain with a land area of 32,424 square miles (Delaney 2). There are several things that you may associate with this country such as St. Patrick’s Day, shamrocks, beer, and strife. The source of the bitterness behind this conflict began centuries ago, when Britain came over and forced Protestantism on the Irish Catholic inhabitants. For this reason there has always been an animosity between the Protestants and the Irish Catholics. The island is broken up into two distinct regions. The Republic of Ireland consists of twenty-six counties, which make up the southern region. This area is predominantly Roman Catholic. Northern Ireland is made up of the six northern counties, which are under British rule and predominately Protestant. Both sides use propaganda to spread their ideas and gain support. They each have organizations, such as the I.R.A., in the south, and the U.V.F., in the north, which use peaceful methods such as newspapers and murals along with violence to fight for their cause. In Northern Ireland the Protestants used their position in the government to spread anti-Catholic propaganda and persecute the Catholic citizens. One way the Unionists, supporters of British rule whose majority is Protestant in faith, used the church is to help spread their anti-Catholic propaganda. Some Protestant ministers such as the Reverend Ian Paisley used pulpit to express his opinion. Catholics. Once while preaching in Belfast, the capital of Northern Ireland, Reverend Paisley â€Å"calls down contumely on ... ... deadly. I do not think that the peaceful methods such as the use of newspapers, poetry, and film are as bad because they are nonviolent and do not physically harm anyone. However, I do not agree with the use of violence, such as, that on Bloody Sunday, nor do I agree with the use of the Lord’s house to teach hate and discrimination. It is not right to use the church for this purpose. One should not teach hate under the guise of God. It is also wrong to pass laws in order to persecute a minority. I can understand the reasons they did this, to gain and keep control, however that doesn’t make it right. The Protestants and Unionists were not the only ones who used these methods of propaganda; the Catholics and Nationalists did as well. Some of these methods have been used since the beginning of the conflict and will most likely continue for generations to come.

A Pattern of Visionary Imagery in W. S. Merwin :: Poem Poet Essays

A Pattern of Visionary Imagery in W. S. Merwin After quoting Blake's own words to establish his work as essentially "'Visionary,'" and then defining that term as the "view of the world . . . as it really is when it is seen by human consciousness at its greatest height and intensity" (143), Northrop Frye suggests an important but largely ignored point for criticism in his essay "Blake After Two Centuries" when he observes that works like Aldous Huxley's The Doors of Perception "seem to show that the formal principles of this heightened vision are constantly latent in the mind," and that it is this constant availability of vision, near at hand but suppressed, which "perhaps explains the communicability of such visions" (143). Frye is right, of course, but there is another reason for his observation's importance to criticism, which is that the imagery and perceptions of visionary experiences, whatever their cause, occur in readily identifiable clusters, the affective nature of which is determined largely by the emotional reaction of the person experiencing them. Because of this, and because there are poets and authors other than Blake whose work is also visionary--that is, concerned to a large extent with the imagery and perceptions of what we now call altered states of consciousness--one can construct from various works and research on these states a visionary schema that will indicate not only when such a writer's subject is the unconscious, but whether his or her emotional reaction to it is positive, negative, or some ambivalent combination of the two. By means of such a schema, for example, it is possible to trace through W. S. Merwin's deep image poetry a pattern of reconciliation with the unconscious: to argue that, in the works published from 1962 through 1977, he moves from a generally negative sense of it to a far more positive one. Though individual poems in the collections ranging from The Moving Target to The Compass Flower reflect varying senses of the unconscious--there are quietly happy poems in his darkest collection The Lice, for instance--the general pattern in these books and those published between is one of a coming-to-terms with the unconscious, a movement visible largely as a coming-to-terms with death. Before arguing that this acceptance of death is no less than a willing (rather than a fearful) acceptance of the self-surrender necessary to any visionary experience or altered state, even one as specialized as the successful writing of deep image poetry, it is first necessary both to provide the general outlines of that schema mentioned above, and to establish that Merwin's work, like Blake's, is in fact visionary.

Device to Overcome Sense of Sight and Hear

SENSE OF SIGHT†¦. The eyes are sensory organs. They keep the brain updated with information about is what happening around the body. Both contain millions of tiny sensors that send messages along nerves to the brain. Sensors in the eyes respond to light and, through the brain, let us see the world. Sensors in the skin respond to touch and allows us to feel. * * * * The seeing eye†¦ Light enters the eye through the clear cornea. It then passes through the pupil and is focused by the lens on the retina. This thin layer covers the back of the eye and contains cells that are sensitive to light.When light hits the cells, they send signals to the brain. There, the signals are turned into pictures so we can see. Telescope†¦ A  telescope  is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation  (such as  visible light). The first known practical telescopes were invented in the  Netherlands  at the beginning of the 17t h century, using glass lenses. They found use in terrestrial applications and astronomy. Within a few decades, the  reflecting telescope  was invented, which used mirrors.In the 20th century many new types of telescopes were invented, including  radio telescopes  in the 1930s and  infrared telescopes  in the 1960s. The word  telescope  now refers to a wide range of instruments detecting different regions of the  electromagnetic spectrum, and in some cases other types of detectors. History†¦ The earliest recorded working telescopes were the  refracting telescopes  that appeared in the Netherlands  in 1608. Their development is credited to three individuals:  Hans Lippershey  and Zacharias Janssen, who were spectacle makers in Middelburg, and  Jacob Metius  of Alkmaar. 4]  Galileo  heard about the Dutch telescope in June 1609, built his own within a month,[5]  and greatly improved upon the design in the following year. The idea that the  ob jective, or light-gathering element, could be a mirror instead of a lens was being investigated soon after the invention of the refracting telescope. [6]  The potential advantages of using  parabolic mirrors—reduction of  spherical aberration  and no  chromatic aberration—led to many proposed designs and several attempts to build  reflecting telescopes. 7]  In 1668,  Isaac Newton  built the first practical reflecting telescope, of a design which now bears his name, the  Newtonian reflector. The invention of the  achromatic lens  in 1733 partially corrected color aberrations present in the simple lens and enabled the construction of shorter, more functional refracting telescopes. Reflecting telescopes, though not limited by the color problems seen in refractors, were hampered by the use of fast tarnishing  speculum metal  mirrors employed during the 18th and early 19th century—a problem alleviated by the introduction of silver coated g lass mirrors in 1857,[8]  and aluminized mirrors in 1932. 9]  The maximum physical size limit for refracting telescopes is about 1 meter (40  inches), dictating that the vast majority of large optical researching telescopes built since the turn of the 20th century have been reflectors. The largest reflecting telescopes currently have objectives larger than 10  m (33  feet). The 20th century also saw the development of telescopes that worked in a wide range of wavelengths from  radio  to  gamma-rays. The first purpose built radio telescope went into operation in 1937. Since then, a tremendous variety of complex astronomical instruments have been developed.How to use†¦ * Find an area where the items you wish to view aren't obstructed by trees to set up your telescope so that you get a clear view of the sky. * Look to see if your telescope has a polar axis. If it does, it will track whatever you are looking at. If you have a telescope with a polar axis, follow your manufacturer's directions on how to align the polar axis and the finder scope. * Select the eyepiece with the lowest magnification that you have. Always start with the lowest magnification eyepiece until you become more experienced in using your telescope. Locate the item in the night sky that you wish to observe and focus in on it. Move the planet or star you are viewing as close to the center of the field of view in the eyepiece as possible. * Remove the low magnification eyepiece and replace it with an eyepiece with a higher magnification. * Readjust the alignment of the telescope when the planet or star drifts out of view if you have a manual telescope mount. * Continue in this manner, observing different visible planets and stars. Binoculars †¦Binoculars,  field glasses  or  binocular telescopes  are a pair of identical or mirror-symmetrical  telescopes  mounted side-by-side and aligned to point accurately in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects. Most are sized to be held using both hands, although sizes vary widely from  opera glasses  to large pedestal mounted military models. Many different abbreviations are used for binoculars, including  glasses, nocs ,noculars ,  binos  and  bins. Unlike a (monocular) telescope, binoculars give users a three-dimensional image: for nearer objects the two views, presented to ach of the viewer's eyes from slightly different viewpoints, produce a merged view with an  impression of depth. History †¦ No sooner was the telescope invented in than the early 1600s than did astronomers get the idea of mounting two of them together, effectively inventing the first binoculars. Galileo (who is often falsely credited with having invented binoculars) adapted an earlier design, using optics that combined convex and concave lenses to create a magnifying effect just like that used today in the cheapest nonprismatic glasses marketed for sports or theater viewing, or for use by children.In the mid-1850s, Ignazio Porro of Italy patented a design using two prisms constructed in a Z shape to present the viewer with an image that not only is better magnified, but has depth. The Porro prism design was followed a few decades later by the roof prism, in which the prisms are constructed in one unit. Soon, binoculars were adapted for military use, and were employed during the Civil War. Quality made a big jump around the turn of the 19th century, and continued to be refined in the early 1900s. With the advent of World War II, more manufacturers entered the binoculars market, including, in the United States, Bausch ; Lomb.Germany continued with its production of highly regarded binoculars, with a few changes. For example, Zeiss, one of the top names in binoculars, experienced a confusing shift, with a new factory established in East Germany under Russian control with the Zeiss name while another factory named Zeiss was b egan exporting from West Germany, according to a history in the 1961 book Binoculars and Scopes and Their Uses in Photography, by Robert J. and Elsa Reichert. Japan exports binoculars via various manufacturers, and some U. S. ompanies import Japanese-made binoculars but sell them under the U. S. company name. How to use†¦ * Put the binocular strap around your neck. Wearing the neck-strap gives you the ability to use both hands while you are using the binoculars. * Adjust the barrels of the binoculars — each side you look into — to the width of your face. Generally, all you need to do is move the barrels closer together or further apart as you hold the binoculars up to your eyes. If you have adjusted the binoculars correctly, you should not see a black â€Å"border† when you look through the eyepieces. Locate the central focus wheel, usually in the middle of the two barrels of the binoculars. Turn the wheel slowly as you look at a particular object in the di stance to get the best focus for your eyes. * Fine-tune your viewing even more if you have a diopter focus mechanism on your binoculars. Not all binoculars have this focus element, which helps compensate for the difference in vision that you might experience in each of your eyes. The diopter focus adjustment wheel is usually on the right-hand barrel. * Keep both eyes open as you view your target objects.You might need to re-focus from time to time. * Clean your binoculars after using them. A soft, damp cloth is sufficient for the body of the binoculars. Treated tissue paper used to clean cameras and eye glasses is safe for wiping the lenses. Store binoculars in their carrying case when you're not using them. Microscope †¦ A  microscope  (from the  Ancient Greek:   ,  mikros, â€Å"small† and   ,  skopein, â€Å"to look† or â€Å"see†) is an  instrument  used to see objects that are too small for the naked eye. The science of investigating small objects using such an instrument is called  microscopy .Microscopic  means invisible to the eye unless aided by a microscope. There are many types of microscopes, the most common and first to be invented is theoptical microscope  which uses  light  to image the sample. Other major types of microscopes are the  electron microscope  (both the  transmission electron microscope  and the  scanning electron microscope) and the various types of  scanning probe microscope History †¦ The first microscope to be developed was the optical microscope, although the original inventor is not easy to identify. An early microscope was made in 1590 in  Middelburg, Netherlands. 1]  Two  eyeglass  makers are variously given credit:  Hans Lippershey   (who developed an early  telescope) and  Zacharias Janssen. Giovanni Faber  coined the namemicroscope   for  Galileo Galilei's compound microscope in 1625  [2]  (Galileo had called it the â€Å"occ hiolino† or â€Å"little eye†). How to use†¦. * When moving your microscope, always carry it with both hands (Figure 1, below). Grasp the arm with one hand and place the other hand under the base for support. * Turn the revolving nosepiece so that the lowest power objective lens is â€Å"clicked† into position (This is also the shortest objective lens). Your microscope slide should be prepared with a coverslip or cover glass over the specimen. This will help protect the objective lenses if they touch the slide. Place the microscope slide on the stage and fasten it with the stage clips. You can push down on the back end of the stage clip to open it. * Look at the objective lens and the stage from the side (Figure 2) and turn the coarse focus knob so that the objective lens moves downward (or the stage, if it moves, goes upward). Move it as far as it will go  without touching the slide! * 5.Now, look through the eyepiece and adjust the illuminator (or mirror ) and diaphragm (Figure 3) for the greatest amount of light. | | | * Slowly turn the coarse adjustment so that the objective lens goes  up  (away from the slide). Continue until the image comes into focus. Use the fine adjustment, if available, for fine focusing. If you have a microscope with a moving stage, then turn the coarse knob so the stage moves downward or away from the objective lens. * Move the microscope slide around so that the image is in the center of the field of view and readjust the mirror, illuminator or diaphragm for the clearest image. Now, you should be able to change to the next objective lenses with only minimal use of the focusing adjustment. Use the fine adjustment, if available. If you cannot focus on your specimen, repeat steps 4 through 7 with the higher power objective lens in place. Do not allow the objective lens to touch the slide! * The proper way to use a monocular microscope is to look through the eyepiece with one eye and keep the other eye op en (this helps avoid eye strain). If you have to close one eye when looking into the microscope, it's ok. Remember, everything is upside down and backwards.When you move the slide to the right, the image goes to the left! * Do not touch the glass part of the lenses with your fingers. Use only special lens paper to clean the lenses. * When finished, raise the tube (or lower the stage), click the low power lens into position and remove the slide. * Always keep your microscope covered when not in use. Submarine†¦ A  submarine  is a  watercraft  capable of independent operation underwater. It differs from a  submersible, which has more limited underwater capability. The term submarine most commonly refers to a large crewed autonomous vessel.However, historically or colloquially, submarine can also refer to medium-sized or smaller vessels (midget submarines,  wet subs),  remotely operated vehiclesor  robots. The adjective  submarine, in terms such as  submarine c able, means â€Å"under the sea†. The noun  submarine  evolved as a shortened form of  submarine boat(and is often further shortened to  sub). [1]  For reasons of  naval traditionsubmarines are usually referred to as â€Å"boats† rather than as â€Å"ships†, regardless of their size. Although experimental submarines had been built before, submarine design took off during the 19th century, and they were adopted by several navies.Submarines were first widely used during  World War I  (1914–1918) and now figure in many large  navies. Military usage includes attacking enemy surface ships or submarines,  aircraft carrier  protection,  blockaderunning,  ballistic missile submarines  as part of a nuclear strike force,  reconnaissance, conventional land attack (for example using acruise missile), and covert insertion of  special forces. Civilian uses for submarines include  marine science, salvage, exploration and facility inspec tion/maintenance. Submarines can also be modified to perform more specialized functions such as search-and-rescue missions or  undersea cable  repair.Submarines are also used in tourism, and for  undersea archaeology. Most large submarines consist of a cylindrical body with hemispherical (and/or conical) ends and a vertical structure, usually located amidships, which houses communications and sensing devices as well as periscopes. In modern submarines this structure is the â€Å"sail† in American usage, and â€Å"fin† in European usage. A â€Å"conning tower† was a feature of earlier designs: a separate pressure hull above the main body of the boat that allowed the use of shorter periscopes.There is a propeller (or pump jet) at the rear and various hydrodynamic control fins as well as ballast tanks. Smaller, deep diving and specialty submarines may deviate significantly from this traditional layout. Submarines have one of the largest ranges of capabilities in any vessel, ranging from small autonomous examples to one- or two-person vessels operating for a few hours, to vessels which can remain submerged for 6 months such as the  Russian  Typhoon class  Ã¢â‚¬â€œ the biggest submarines ever built and in use. Submarines can work at greater depths than are survivable or practical for human  divers.Modern deep diving submarines are derived from the  bathyscaphe, which in turn was an evolution of the  diving bell. History†¦ The first submersible of which we have reliable information on its construction was built in 1620 by  Cornelius Drebbel, a  Dutchman  in the service of  James I of England. It was created to the standards of the design outlined by English mathematician  William Bourne. It was propelled by means of oars. The precise nature of the submarine type is a matter of some controversy; some claim that it was merely a bell towed by a boat. Two improved types were tested in the  Thames  between 1620 an d 1624.In 2002 a two-person version of Bourne's design was built for the  BBC  TV programme  Building the Impossible  by  Mark Edwards, and successfully rowed under water at  Dorney Lake,  Eton. Though the first submersible vehicles were tools for exploring under water, it did not take long for inventors to recognize their military potential. The strategic advantages of submarines were set out by Bishop  John Wilkins  of  Chester, England, in  Mathematicall Magick  in 1648: 1. This private: a man may thus go to any coast in the world invisibly, without discovery or prevented in his journey. 2.This safe, from the uncertainty of Tides, and the violence of Tempests, which do never move the sea above five or six paces deep. From Pirates and Robbers which do so infest other voyages; from ice and great frost, which do so much endanger the passages towards the Poles. 3. It may be of great advantages against a Navy of enemies, who by this may be undermined in the wat er and blown up. 4. It may be of special use for the relief of any place besieged by water, to convey unto them invisible supplies; and so likewise for the surprisal of any place that is accessible by water. 5.It may be of unspeakable benefit for submarine experiment How it work†¦ The adaptations and inventions that allow sailors to not only fight a battle, but also live for months or even years underwater are some of the most brilliant developments in military history. In this article, you will see how a submarine dives and surfaces in the water, how life support is maintained, how the submarine gets its power, how a submarine finds its way in the deep ocean and how submarines might be rescued. Ultrasound scanning device†¦ Ultrasound  is a cyclic  sound  pressure wave with a  frequency  greater than the upper limit of the human  hearing range.Ultrasound is thus not separated from â€Å"normal† (audible) sound based on differences in physical properties, only the fact that humans cannot hear it. Although this limit varies from person to person, it is approximately 20  kilohertz  (20,000 hertz) in healthy, young adults. Ultrasound devices operate with frequencies from 20  kHz up to several gigahertz. Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasonic imaging (sonography) is used in human and veterinary medicine. In non-destructive testing of products and structures, ultrasound is used to detect invisible flaws.Industrially, ultrasound is used for cleaning and for mixing, and to accelerate chemical processes. Organisms such as bats and porpoises use ultrasound for locating prey and obstacles. Ultrasonics  is the application of  ultrasound. Ultrasound can be used for imaging, detection, measurement, and cleaning. At higher power levels ultrasonics are useful for changing the chemical  . History †¦ Acoustics, the science of sound, starts as far b ack as  Pythagoras  in the 6th century BC, who wrote on the mathematical properties of stringed instruments. Sir  Francis Galton  constructed  a whistle  producing ultrasound in 1893.The first technological application of ultrasound was an attempt to detect icebergs by  Paul Langevin  in 1917. The  piezoelectric effect  discovered by Jacques and Pierre Curie in 1880 was useful in transducers to generate and detect ultrasonic waves in air and water. [2]  Echolocation  in bats was discovered byLazzaro Spallanzani  in 1794, when he demonstrated that bats hunted and navigated by inaudible sound and not vision. How it works†¦ There are many reasons to get an ultrasound. Perhaps you're pregnant, and your obstetrician wants you to have an ultrasound to check on the developing baby or determine the due date.Maybe you're having problems with blood  circulation in a limb or your heart, and your doctor has requested a Doppler ultrasound to look at the blood flo w. Ultrasound has been a popular medical imaging technique for many years. Ultrasound  or  ultrasonography is a medical imaging technique that uses high frequency sound waves and their echoes. The technique is similar to the echolocation used by bats, whales and dolphins, as well as SONAR used by  submarines. In this article, we'll look at how ultrasound works, what type of ultrasound techniques are vailable and what each technique can be used for. Magnifying glass†¦ A  magnifying glass  (called a  hand lens  in laboratory contexts) is a  convex lens  that is used to produce a  magnified  image  of an object. The  lens  is usually mounted in a frame with a handle (see image). A  sheet magnifier  consists of many very narrow concentric ring-shaped lenses, such that the combination acts as a single lens but is much thinner. This arrangement is known as aFresnel lens. The magnifying glass is an icon of  detective fiction, particularly that of  S herlock Holmes. History †¦The earliest evidence of â€Å"a magnifying device, a convex lens forming a magnified image† was Aristophanes's â€Å"lens†, from 424 BC, a glass globe filled with water. (Seneca  wrote that it could be used to read letters â€Å"no matter how small or dim†). [1]  Roger Bacon  described the properties of a magnifying glass in 13th-century  England. Eyeglasses  were developed in 13th-century  Italy. How it works†¦ The  magnification  of a magnifying glass depends upon where it is placed between the user's eye and the object being viewed, and the total distance between them.The  magnifying power  is equivalent to  angular magnification  (this should not be confused with  optical power, which is a different quantity). The magnifying power is the ratio of the sizes of the images formed on the user's retina with and without the lens. [3]  For the â€Å"without† case, it is typically assumed that t he user would bring the object as close to the eye as possible without it becoming blurry. This point, known as the  near point,  varies with age. In a young child it can be as close as 5  cm, while in an elderly person it may be as far as one or two metres.Magnifiers are typically characterized using a â€Å"standard† value of 0. 25  m. The highest magnifying power is obtained by putting the lens very close to the eye and moving the eye and the lens together to obtain the best  focus. The object will then typically also be close to the lens. Sense of hearing†¦ Hearing,  auditory perception, or  audition  is the ability to perceive  sound  by detectingvibrations,  changes in the pressure of the surrounding medium through time, through an organ such as the  ear. Sound may be heard through  solid,  liquid, or  gaseous  matter. It is one of the traditional five  senses.The inability to hear is called  deafness. In humans and other vertebr ates, hearing is performed primarily by the  auditory system: vibrations are detected by the  ear  and transduced into nerve impulses that are perceived by the  brain  (primarily in the  temporal lobe). Like  touch, audition requires sensitivity to the movement of molecules in the world outside the organism. Both hearing and touch are types of mechanosensation. Stethoscope †¦ The  stethoscope  is an acoustic  medical  device for  auscultation, or listening to the internal sounds of an animal or human body.It is often used to listen to lung and  heart sounds. It is also used to listen to  intestines  and blood flow in  arteries  and  veins. In combination with asphygmomanometer, it is commonly used for measurements of  blood pressure. Less commonly, â€Å"mechanic's stethoscopes† are used to listen to internal sounds made by machines, such as diagnosing a malfunctioning automobile engine by listening to the sounds of its internal part s. Stethoscopes can also be used to check scientific vacuum chambers for leaks, and for various other small-scale acoustic monitoring tasks.A stethoscope that intensifies auscultatory sounds is called  phonendoscope. History†¦ The stethoscope was invented in  France  in 1816 by  Rene Laennec  at the  Necker-Enfants Malades Hospital  in  Paris. [1]  It consisted of a wooden tube and was monaural. His device was similar to the common  ear trumpet, a historical form of hearing aid; indeed, his invention was almost indistinguishable in structure and function from the trumpet, which was commonly called a â€Å"microphone†. The first flexible stethoscope of any sort may have been a binaural instrument with articulated joints not very clearly described in 1829. 2]  In 1840,Golding Bird  described a stethoscope he had been using with a flexible tube. Bird was the first to publish a description of such a stethoscope but he noted in his paper the prior exis tence of an earlier design (which he thought was of little utility) which he described as the snake ear trumpet. Bird's stethoscope had a single earpiece. [3]  In 1851, Irish physician Arthur Leared invented a binaural stethoscope, and in 1852 George Cammann perfected the design of the instrument for commercial production, which has become the standard ever since.Cammann also wrote a major treatise on diagnosis by auscultation, which the refined binaural stethoscope made possible. By 1873, there were descriptions of a differential stethoscope that could connect to slightly different locations to create a slight stereo effect, though this did not become a standard tool in clinical practice. The medical historian  Jacalyn Duffin  has argued that the invention of the stethoscope marked a major step in the redefinition of disease from being a bundle of symptoms, to the current sense of a disease as a problem with an anatomical system even if there are no noticeable symptoms.This r e-conceptualiization occurred in part, Duffin argues, because prior to the stethoscopes, there were no non-lethal instruments for exploring internal anatomy. [4] Rappaport and Sprague designed a new stethoscope in the 1940s, which became the standard by which other stethoscopes are measured, consisting of two sides, one of which is used for the respiratory system, the other for the cardiovascular system. The Rappaport-Sprague was later made by  Hewlett-Packard. HP's medical products division was spun off as part of Agilent Technologies, Inc. , where it became Agilent Healthcare.Agilent Healthcare was purchased byPhilips  which became Philips Medical Systems, before the walnut-boxed, $300, original Rappaport-Sprague stethoscope was finally abandoned ca. 2004, along with Philips' brand (manufactured by Andromed, of Montreal, Canada) electronic stethoscope model. The Rappaport-Sprague model stethoscope was heavy and short (18–24  in (46–61  cm)) with an antiquated appearance recognizable by their two large independent latex rubber tubes connecting an exposed-leaf-spring-joined-pair of opposing â€Å"f†-shaped chrome-plated brass binaural ear tubes with a dual-head chest piece.How to use†¦ * Clean off the earpieces before placing the stethoscope into your ears, especially if others share it or you seldom use it. In the hospital, earpieces are wiped with alcohol prep swabs. * Hold the chest piece between your palms to warm it before placing it on a person's chest. Thirty seconds is usually long enough to remove the chill. * Place the stethoscope into your ears. * Hold the chest piece in your hand. With the other hand, tap a finger against the chest piece and listen. Many stethoscopes have reversible heads, which can be incompletely swiveled and block sound. Grip the chest piece between your middle and index fingers to provide firm contact with the skin. * To minimize extraneous noises, avoid touching or rubbing the tubing or chest piece against clothing, bedcovers or hair. * Place the chest piece onto the part of the body you want to listen to. For the heart, this is a few inches above the left nipple. You should hear a steady â€Å"lub dub. † This is known as the apical pulse. * Store your stethoscope so that the tubing isn't kinked when you put it away. In hospitals, when stethoscopes are not being used, they're generally hung by their earpieces so that the tubing can dangle freely.Loudhailer†¦ A  megaphone,  speaking-trumpet,  bullhorn,  blowhorn, or  loud hailer  is a portable, usually hand-held, cone-shaped  acoustic horn  used to  amplify  a person’s voice or othersounds  and direct it in a given direction. The sound is introduced into the narrow end of the megaphone, by holding it up to the face and speaking into it, and the sound waves radiate out the wide end. The megaphone increases the volume of sound by increasing the  acoustic impedance  seen by the  vocal cords,  matching  the impedance of the vocal cords to the air, so that more sound power is radiated.It also serves to direct the sound waves in the direction the horn is pointing. It somewhat distorts the sound of the voice because thefrequency response  of the megaphone is greater at higher sound  frequencies. Since the 1970s the voice-powered  acoustic megaphone  described above has been replaced by theelectric megaphone, which uses electric power to  amplify  the voice. History†¦ The initial inventor of the speaking trumpet is a subject of historical controversy, as both  Samuel Morland  and  Athanasius Kircher  lay claim to the device.Morland, in a work published in 1655, wrote about his experimentation with different horns and his most successful variant. This loudest horn was made of over 20 feet of copper and could supposedly project vocalizations as far as a mile and a half. [1] Twenty years earlier, Kircher described a device that could b e used for both broadcasting on one end and â€Å"overhearing† on the other. His coiled horn would be wedged into the side of a building, connecting a speaker or listener inside with the surrounding environment.Morland favored a straight, tube-shaped speaking device, where an initial sound would reverberate in waves through the instrument and gradually become louder. Kircher’s horn, on the other hand, utilized a â€Å"cochleate† design, where the horn was twisted and coiled, unlike Morland’s design. A later,  papier-mache  trumpet of special design was the Sengerphone. [2] The term ‘megaphone’ was first associated with  Thomas Edison’s instrument 200 years later. In 1878, Edison developed a device similar to the speaking trumpet in hopes of benefiting the deaf and hard of hearing.His variation included three separate funnels lined up in a row. The two outer funnels, which were six feet and eight inches long, were made of paper an d connected to a tube inserted in each ear. The middle funnel was similar to Morland’s speaking trumpet, but had a larger slot to insert a user’s mouth. [3] With Edison’s megaphone, a low whisper could be heard a thousand feet away, while a normal tone of voice could be heard roughly two miles away. On the listening end, the receiver could hear a low whisper at a thousand feet away. However the apparatus was much too large to be portable, limiting its use.George Prescott wrote: â€Å"The principal drawback at present is the large size of the apparatus. † Since the 1960s acoustic megaphones have generally been replaced by electric versions  (below), although the cheap, light, rugged acoustic megaphone is still used in a few venues, like cheering at sporting events,  cheerleading, and by  lifeguards  at pools and beaches where the moisture could damage the electronics of electric megaphones. How to use†¦ * Hold the megaphone several inches from your mouth with the small end toward you and the large end away from you. * Point the large end of the megaphone toward the crowd you wish to exhort. Speak loudly or shout into the small end. * Wait for the crowd's response, then repeat Step 3 as necessary. Sonar†¦ Sonar  (originally an  acronym  for  Sound  Navigation  And  Ranging) is a technique that uses  sound  propagation (usually underwater, as in  submarine navigation) to  navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Two types of technology share the name â€Å"sonar†:  passive  sonar is essentially listening for the sound made by vessels;  active  sonar is emitting pulses of sounds and listening for echoes.Sonar may be used as a means of  acoustic location  and of measurement of the echo characteristics of â€Å"targets† in the water. Acoustic location in air was used before the introduction of  radar. Sonar may also be used in air for robot navigation, and  SODAR  (an upward looking in-air sonar) is used for atmospheric investigations. The term  sonar  is also used for the equipment used to generate and receive the sound. The acoustic frequencies used in sonar systems vary from very low (infrasonic) to extremely high (ultrasonic). The study of underwater sound is known as  underwater acoustics  orhydroacoustics.History†¦ Although some animals (dolphins and bats) have used sound for communication and object detection for millions of years, use by humans in the water is initially recorded by  Leonardo Da Vinci  in 1490: a tube inserted into the water was said to be used to detect vessels by placing an ear to the tube. [1] In the 19th century an underwater bell was used as an ancillary to  lighthouses  to provide warning of hazards. The use of sound to ‘echo locate' underwater in the same way as  bats  use sound for aerial navigation seems to have been p rompted by the  Titanic  disaster of 1912.The world's first  patent  for an underwater echo ranging device was filed at the British  Patent Office  by English meteorologist  Lewis Richardson  a month after the sinking of the Titanic,[2]  and a German physicist  Alexander Behm  obtained a patent for an echo sounder in 1913. The Canadian engineer  Reginald Fessenden, while working for the Submarine Signal Company in Boston, built an experimental system beginning in 1912, a system later tested in Boston Harbor, and finally in 1914 from the U. S. Revenue (now Coast Guard) Cutter Miami on the  Grand Banks  off  Newfoundland  Canada. 2][3]  In that test, Fessenden demonstrated depth sounding, underwater communications (Morse Code) and echo ranging (detecting an iceberg at two miles (3  km) range). [4][5]  The so-called  Fessenden  oscillator, at ca. 500  Hz frequency, was unable to determine the bearing of the berg due to the 3 metre wavelength and the small dimension of the transducer's radiating face (less than 1 metre in diameter). The ten  Montreal-built  British H class submarines  launched in 1915 were equipped with aFessenden oscillator. [6] During  World War I  the need to detect  submarines  prompted more research into the use of sound.The British made early use of underwater hydrophones, while the French physicist  Paul Langevin, working with a Russian immigrant electrical engineer,  Constantin Chilowski, worked on the development of active sound devices for detecting submarines in 1915 using quartz. Although  piezoelectricand magnetostrictive transducers later superseded the  electrostatic  transducers they used, this work influenced future designs. Lightweight sound-sensitive plastic film and fibre optics have been used for  hydrophones  (acousto-electric transducers for in-water use), while  Terfenol-D  and PMN (lead magnesium niobate) have been developed for projectors.How to u se†¦ * Install the transmitter. You'll usually have a choice between mounting the transmitter beneath the boat, to a trolling motor or atop the interior hull and letting it drop into the water. * Set the fish finding sonar's sensitivity while watching the display. When the sensitivity is too high, there will be static-like patterns on the display. If the sensitivity is too low, not even the bottom of the body of the water will appear on screen. * 3 * Determine the depth of the body of water. This will be a numeric value on the fish finder sonar system's display.This is important in helping you to determine how much fishing line to feed out from your pole. * Get accustomed to the display's representation of the body of water. The bottom will appear as a jagged, solid line near the bottom of your display. The surface of the water appears as a jumbled static-filled horizontal line at the top of your fish finder sonar system's display. * Learn to identify patterns on your display t hat are brush piles if you're fishing on a lake. Brush piles appear as blobs resting on the lake bottom.Fish such as bass hide out in brush piles, so consider fishing near these echoes. * Learn how to identify fish on your fish finder sonar system display with the fish symbols turned off. With the symbols turned off, fish appear as short curved lines above the bottom of the body of water. Adjust the fish finder sonar's noise filter if there are lines in your display that look like random static. * Remember what the fish finder sonar display was indicating when you catch a fish. This will help you to learn how to use your system to catch more fish later if you keep in mind what to look for.